SOLUTION: Im getting stuck on this system of equation by subtitution: Exercise 1 x=3y+7 x=2y-1 Exercise 2 xy=-12 x-2y+14=0

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Question 729953: Im getting stuck on this system of equation by subtitution:
Exercise 1 x=3y+7
x=2y-1
Exercise 2 xy=-12
x-2y+14=0

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
1)
x=3y+7
x=2y-1
2y-1=3y+7
-y=8
y=-8
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x=3*-8+7
x=-24+7
x=-17
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x=2y-1
-17=2*-8-1
-17=-17